Bug 188540

Summary: No sound with Intel HDA/ALC260
Product: [Fedora] Fedora Reporter: John Straw <jstraw>
Component: kernelAssignee: John W. Linville <linville>
Status: CLOSED UPSTREAM QA Contact: Brian Brock <bbrock>
Severity: medium Docs Contact:
Priority: medium    
Version: 5CC: davej, wtogami
Target Milestone: ---   
Target Release: ---   
Hardware: i386   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Clone Of: Environment:
Last Closed: 2006-06-23 18:47:20 UTC Type: ---
Regression: --- Mount Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description Flags
Output of system-config-soundcard after upgrading ALSA drivers to 1.0.11-rc4
none
Output of system-config-soundcard with default kernel drivers none

Description John Straw 2006-04-11 00:35:38 UTC 
Sound worked with this hardware in Fedora Core 4.  After an upgrade to Fedora
Core 5, sound did not work.  Currently, sound does not work on this machine with
either kernel-smp-2.6.15-1.2054_FC5 or kernel-smp-2.6.16-1.2080_FC5.

I have gone through the normal steps of running system-config-soundcard and
using alsamixer to make sure that output channels are not muted.  No sound.

The proper sound modules seem to be loaded but the sound device doesn't appear
to get initialized properly.  For example, 'cat
/sys/module/snd_hda_intel/parameters/model' returns "<NULL>", which I gather
from some reading around means that the module hasn't loaded and/or initialized
the device correctly.

This issue seems similar to that discussed in bug #182940, but I've not been
able to find any reference to the ALC260 in any of the discussion of this issue
(that bug is for the HDA/STAC92xx).  My computer is not a laptop, either, but an
HP desktop.

My problem may be related to the issues described in
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1843.  However, the
changes made to ALSA drivers for 1.0.11-rc4 do not fix the problem for me.  I
upgraded my ALSA drivers to 1.0.11-rc4 by following the instructions in
http://people.redhat.com/stransky/alsa/ with no change.
Comment 1 John Straw 2006-04-11 00:35:38 UTC 
Created attachment 127581 [details]
Output of system-config-soundcard after upgrading ALSA drivers to 1.0.11-rc4
Comment 2 John Straw 2006-04-11 00:38:29 UTC 
Created attachment 127582 [details]
Output of system-config-soundcard with default kernel drivers
Comment 3 German 2006-06-20 16:42:48 UTC 
I have a HP dc7600 with kernel-smp-2.6.16-1.2080_FC5, and had exactly
the same problem. I've installed the latest alsa drivers and still no
sound at all. 

Finally I succeded by adding the line

  options snd-hda-intel model=basic

to file /etc/modprobe.conf (then reboot and unmute the volume with
alsamixer)

good luck!
Comment 4 John Straw 2006-06-21 18:26:04 UTC 
Yes, adding the model parameter works for me, too.  Also, there's a patch at
https://bugtrack.alsa-project.org/alsa-bug/view.php?id=2106 which solves the
problem for me, as well.
Comment 5 John W. Linville 2006-06-23 18:47:20 UTC 
Cool...thanks for the info!